Bellingshausen Sea bathymetric compilation
The southern Bellingshausen Sea (SBS) is a rapidly-changing part of West Antarctica, where oceanic and atmospheric warming has led to the recent basal melting and break-up of the Wilkins ice shelf, the dynamic thinning of fringing glaciers, and sea-ice reduction. Accurate sea-floor morphology is vit...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.746255 2023-05-15T13:41:33+02:00 Bellingshausen Sea bathymetric compilation Graham, Alastair G C Nitsche, Frank-Oliver Larter, Robert D 2011-10-14 application/zip, 7.5 MBytes https://doi.pangaea.de/10.1594/PANGAEA.746255 https://doi.org/10.1594/PANGAEA.746255 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.746255 https://doi.org/10.1594/PANGAEA.746255 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Graham, Alastair G C; Nitsche, Frank-Oliver; Larter, Robert D (2011): An improved bathymetry compilation for the Bellingshausen Sea, Antarctica, to inform ice-sheet and ocean models. The Cryosphere, 5, 95-106, https://doi.org/10.5194/tc-5-95-2011 Dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.746255 https://doi.org/10.5194/tc-5-95-2011 2023-01-20T08:51:30Z The southern Bellingshausen Sea (SBS) is a rapidly-changing part of West Antarctica, where oceanic and atmospheric warming has led to the recent basal melting and break-up of the Wilkins ice shelf, the dynamic thinning of fringing glaciers, and sea-ice reduction. Accurate sea-floor morphology is vital for understanding the continued effects of each process upon changes within Antarctica's ice sheets. Here we present a new bathymetric grid for the SBS compiled from shipborne echo-sounder, spot-sounding and sub-ice measurements. The 1-km grid is the most detailed compilation for the SBS to-date, revealing large cross-shelf troughs, shallow banks, and deep inner-shelf basins that continue inland of coastal ice shelves. The troughs now serve as pathways which allow warm deep water to access the ice fronts in the SBS. Our dataset highlights areas still lacking bathymetric constraint, as well as regions for further investigation, including the likely routes of palaeo-ice streams. The new compilation is a major improvement upon previous grids and will be a key dataset for incorporating into simulations of ocean circulation, ice-sheet change and history. It will also serve forecasts of ice stability and future sea-level contributions from ice loss in West Antarctica, required for the next IPCC assessment report in 2013. Dataset Antarc* Antarctica Bellingshausen Sea Ice Sheet Ice Shelf Ice Shelves Sea ice The Cryosphere West Antarctica Wilkins Ice Shelf PANGAEA - Data Publisher for Earth & Environmental Science Bellingshausen Sea West Antarctica Wilkins ENVELOPE(59.326,59.326,-67.248,-67.248) Wilkins Ice Shelf ENVELOPE(-72.500,-72.500,-70.416,-70.416) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
The southern Bellingshausen Sea (SBS) is a rapidly-changing part of West Antarctica, where oceanic and atmospheric warming has led to the recent basal melting and break-up of the Wilkins ice shelf, the dynamic thinning of fringing glaciers, and sea-ice reduction. Accurate sea-floor morphology is vital for understanding the continued effects of each process upon changes within Antarctica's ice sheets. Here we present a new bathymetric grid for the SBS compiled from shipborne echo-sounder, spot-sounding and sub-ice measurements. The 1-km grid is the most detailed compilation for the SBS to-date, revealing large cross-shelf troughs, shallow banks, and deep inner-shelf basins that continue inland of coastal ice shelves. The troughs now serve as pathways which allow warm deep water to access the ice fronts in the SBS. Our dataset highlights areas still lacking bathymetric constraint, as well as regions for further investigation, including the likely routes of palaeo-ice streams. The new compilation is a major improvement upon previous grids and will be a key dataset for incorporating into simulations of ocean circulation, ice-sheet change and history. It will also serve forecasts of ice stability and future sea-level contributions from ice loss in West Antarctica, required for the next IPCC assessment report in 2013. |
format |
Dataset |
author |
Graham, Alastair G C Nitsche, Frank-Oliver Larter, Robert D |
spellingShingle |
Graham, Alastair G C Nitsche, Frank-Oliver Larter, Robert D Bellingshausen Sea bathymetric compilation |
author_facet |
Graham, Alastair G C Nitsche, Frank-Oliver Larter, Robert D |
author_sort |
Graham, Alastair G C |
title |
Bellingshausen Sea bathymetric compilation |
title_short |
Bellingshausen Sea bathymetric compilation |
title_full |
Bellingshausen Sea bathymetric compilation |
title_fullStr |
Bellingshausen Sea bathymetric compilation |
title_full_unstemmed |
Bellingshausen Sea bathymetric compilation |
title_sort |
bellingshausen sea bathymetric compilation |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.746255 https://doi.org/10.1594/PANGAEA.746255 |
long_lat |
ENVELOPE(59.326,59.326,-67.248,-67.248) ENVELOPE(-72.500,-72.500,-70.416,-70.416) |
geographic |
Bellingshausen Sea West Antarctica Wilkins Wilkins Ice Shelf |
geographic_facet |
Bellingshausen Sea West Antarctica Wilkins Wilkins Ice Shelf |
genre |
Antarc* Antarctica Bellingshausen Sea Ice Sheet Ice Shelf Ice Shelves Sea ice The Cryosphere West Antarctica Wilkins Ice Shelf |
genre_facet |
Antarc* Antarctica Bellingshausen Sea Ice Sheet Ice Shelf Ice Shelves Sea ice The Cryosphere West Antarctica Wilkins Ice Shelf |
op_source |
Supplement to: Graham, Alastair G C; Nitsche, Frank-Oliver; Larter, Robert D (2011): An improved bathymetry compilation for the Bellingshausen Sea, Antarctica, to inform ice-sheet and ocean models. The Cryosphere, 5, 95-106, https://doi.org/10.5194/tc-5-95-2011 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.746255 https://doi.org/10.1594/PANGAEA.746255 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.746255 https://doi.org/10.5194/tc-5-95-2011 |
_version_ |
1766152205598982144 |